Table 1.
Distribution of oral hygiene index-simplified (OHI-S) scores among different age-groups and gender
| Age category | OHI-S status | ||||
|---|---|---|---|---|---|
| Good | Fair | Poor | Total | OHI-S | |
| n (%) | n (%) | n (%) | N (%) | Mean ± S.D. | |
| 12 years | 162 (53.3) | 95 (31.2) | 47 (15.5) | 304 (100.0) | 1.56 ± 1.42 |
| 13 years | 168 (60.2) | 76 (27.2) | 35 (12.5) | 279 (100.0) | 1.36 ± 1.26 |
| 14 years | 84 (52.8) | 56 (34.6) | 20 (12.6) | 159 (100.0) | 1.51 ± 1.21 |
| 15 years | 70 (44.3) | 65 (41.1) | 23 (14.6) | 158 (100.0) | 1.68 ± 1.16 |
| Total | 484 (53.8) | 291 (32.3) | 125 (13.9) | 900 (100.0) | 1.51 ± 1.30 |
| p valuea = 0.054# | p valueb = 0.535# | ||||
| Male | 314 (50.2) | 214 (34.2) | 98 (15.7) | 626 (100.0) | 1.64 ± 1.33 |
| Female | 170 (62.0) | 77 (28.1) | 27 (9.9) | 274 (100.0) | 1.23 ± 1.16 |
| Total | 484 (53.8) | 291 (32.3) | 125 (13.9) | 900 (100.0) | |
| p valuea = 0.003* | p valuec < 0.001* | ||||
#
Not-significant
*
Statistically significant
a
Chi-square test
b
Kruskal–Wallis test
c
Mann–Whitney U test